Pleated Panel Filter With Compressed Filtration Region
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Panel air filters face a challenge in balancing dust holding capacity and airflow, as they need to efficiently capture small particles while preventing premature clogging, which often results in a compromise between particle capture efficiency and air flow restriction, leading to energy loss and reduced filter lifespan.
Innovation Solution
A pleated filter media with distinct filtration regions, including a compressed filtration region and a remainder filtration region, is designed to provide different filtering properties. The compressed region, covering between 5-50% of the filter media, has a thinner thickness than the regular region, and is supported by adhesive elements and embossments to maintain structural integrity and airflow, while the coarser and finer fibers are strategically arranged for enhanced dust holding capacity and filtration efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a restrictive filter media is used to enable adequate particle capture efficiency, then particle capture efficiency is improved, but air flow is restricted causing energy loss
Solution Approach 1:
The filter media is designed with different regions having different properties: a compressed filtration region with higher density for particle capture and a remainder filtration region with lower density for airflow. This local differentiation allows simultaneous optimization of both filtration efficiency and air flow characteristics without requiring the entire media to be restrictive.
2Quantity of substance
If a panel filter provides sufficient dust holding capacity, then dust holding capacity is improved, but the filter plugs prematurely reducing filter lifespan
Solution Approach 1:
The filter media incorporates a compressed filtration region that occupies 5-50% of the total area and provides high dust holding capacity through increased media density. The remainder filtration region maintains lower density to prevent premature plugging. This spatial differentiation of media properties allows the filter to accommodate more dust before reaching pressure drop thresholds that would terminate filter operation.
3Productivity
If an open filter structure is used to allow easy air flow through the pleated panel filter, then air flow is improved, but particle capture efficiency is reduced
Solution Approach 1:
The filter structure implements a compressed filtration region with higher media density arranged to provide MERV 13 or greater efficiency for particle capture. The remainder filtration region maintains lower density and more open structure to facilitate air flow. By strategically positioning these different regions within the pleated panel, the filter achieves both adequate particle capture efficiency and acceptable air flow characteristics.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution achieves a high MERV rating of at least 13, with a volumetric dust holding capacity greater than 0.040 grams/cubic-inch, effectively balancing dust loading and airflow, thereby extending filter lifespan and reducing energy consumption.
Implementation Method 1
a plurality of adhesive elements extending between adjacent members of the pleat flanks and attaching adjacent members of the pleat flanks
Implementation Method 2
filter media sheet being pleated to include a plurality of pleat tips... providing the filter media with different filtering properties
Data Source
AI summary
A panel filter is provided. The panel filter can have extended life or higher dust holding capacity by one or more of the following provisions of (a) placing the dimpled pattern (compressed region) on the downstream side and outlet face of the media, (b) using the dimpled media in combination with adhesive spacers and embossments, (c) selection of a media that is depth loading rather than surface loading, (d) operating the pleater/embossing assembly in a manner so as to maintain integrity of the dimples and/or other features as described herein.